<template>
    <div class="app-container">


        <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch">
            <el-form-item label="菜单名称" prop="menuName">
                <el-input v-model="queryParams.menuName" placeholder="请输入菜单名称" clearable
                    @keyup.enter.native="handleQuery" />
            </el-form-item>
            <el-form-item label="状态" prop="status">
                <el-select v-model="queryParams.status" placeholder="菜单状态" clearable size="small">
                    <el-option :key="0" label="正常" :value="0" />
                    <el-option :key="1" label="停用" :value="1" />
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
                <el-button icon="el-icon-refresh" size="mini" @click="resetData()">重置</el-button>
            </el-form-item>
        </el-form>

        <el-row :gutter="10" class="mb8">
            <el-col :span="1.5">
                <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd">新增</el-button>
            </el-col>
            <el-col :span="1.5">
                <el-button type="info" plain icon="el-icon-sort" size="mini" @click="toggleExpandAll">展开/折叠</el-button>
            </el-col>
            <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
        </el-row>

        <el-table v-if="refreshTable" v-loading="loading" :data="menuList" row-key="id" :default-expand-all="isExpandAll"
            :tree-props="{ children: 'children', hasChildren: 'hasChildren' }">
            <el-table-column prop="menuName" label="菜单名称" :show-overflow-tooltip="true" width="160" />
            <el-table-column prop="icon" label="图标" align="center" width="100">
                <template slot-scope="scope">
                    <svg-icon :icon-class="scope.row.icon" />
                </template>
            </el-table-column>
            <el-table-column prop="orderNum" label="排序" width="60" />
            <el-table-column prop="permission" label="权限标识" :show-overflow-tooltip="true" />
            <el-table-column prop="component" label="组件路径" :show-overflow-tooltip="true" />
            <el-table-column prop="status" label="状态" width="80">
                <template slot-scope="scope">
                    <el-tag v-if="scope.row.status == 0" type="success">正常</el-tag>
                    <el-tag v-if="scope.row.status == 1" type="danger">停用</el-tag>
                </template>
            </el-table-column>
            <el-table-column label="创建时间" align="center" prop="createTime">
                <template slot-scope="scope">
                    <span>{{ parseTime(scope.row.createTime) }}</span>
                </template>
            </el-table-column>
            <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
                <template slot-scope="scope">
                    <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)">修改</el-button>
                    <el-button size="mini" type="text" icon="el-icon-plus" @click="handleAdd(scope.row)">新增</el-button>
                    <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>


        <!-- 添加或修改菜单对话框 -->
        <el-dialog :title="title" :visible.sync="open" width="680px" append-to-body>
            <el-form ref="form" :model="form" :rules="rules" label-width="100px">
                <el-row>
                    <el-col :span="24">
                        <el-form-item label="上级菜单">
                            <treeselect v-model="form.parentId" :options="menuOptions" :normalizer="normalizer"
                                :show-count="true" placeholder="选择上级菜单" />
                        </el-form-item>
                    </el-col>
                    <el-col :span="24">
                        <el-form-item label="菜单类型" prop="menuType">
                            <el-radio-group v-model="form.menuType">
                                <el-radio label="M">目录</el-radio>
                                <el-radio label="C">菜单</el-radio>
                                <el-radio label="F">按钮</el-radio>
                            </el-radio-group>
                        </el-form-item>
                    </el-col>
                    <el-col :span="24">
                        <el-form-item v-if="form.menuType != 'F'" label="菜单图标">
                            <!-- <IconSelect ref="iconSelect" @selected="selected" /> -->
                            <el-select v-model="form.icon" placeholder="图标" clearable size="small" style="width: 240px">
                                <el-option v-for="(item, index) in icons" :key="index" :value="item">
                                    <svg-icon :icon-class="item" />
                                    <span>{{ item }}</span>
                                </el-option>

                            </el-select>

                        </el-form-item>
                    </el-col>
                    <el-col :span="12">
                        <el-form-item label="菜单名称" prop="menuName">
                            <el-input v-model="form.menuName" placeholder="请输入菜单名称" />
                        </el-form-item>
                    </el-col>
                    <el-col :span="12">
                        <el-form-item label="显示排序" prop="orderNum">
                            <el-input-number v-model="form.orderNum" controls-position="right" :min="0" />
                        </el-form-item>
                    </el-col>
                    <el-col :span="24">
                        <el-form-item v-if="form.menuType != 'F'" prop="path">
                            <span slot="label">
                                <el-tooltip content="访问的路由地址，如：`user`" placement="top">
                                    <i class="el-icon-question" />
                                </el-tooltip>
                                路由地址
                            </span>
                            <el-input v-model="form.path" placeholder="请输入路由地址" />
                        </el-form-item>
                    </el-col>
                    <el-col v-if="form.menuType == 'C'" :span="12">
                        <el-form-item prop="component">
                            <span slot="label">
                                <el-tooltip content="访问的组件路径，如：`system/user/index`，默认在`views`目录下" placement="top">
                                    <i class="el-icon-question" />
                                </el-tooltip>
                                组件路径
                            </span>
                            <el-input v-model="form.component" placeholder="请输入组件路径" />
                        </el-form-item>
                    </el-col>
                    <el-col :span="12">
                        <el-form-item v-if="form.menuType != 'M'">
                            <el-input v-model="form.permission" placeholder="请输入权限标识" maxlength="100" />
                            <span slot="label">
                                <el-tooltip content="控制器中定义的权限字符，如：@PreAuthorize(`@ss.hasPermi('system:user:list')`)"
                                    placement="top">
                                    <i class="el-icon-question" />
                                </el-tooltip>
                                权限字符
                            </span>
                        </el-form-item>
                    </el-col>

                    <el-col :span="12">
                        <el-form-item v-if="form.menuType != 'F'">
                            <span slot="label">
                                <el-tooltip content="选择隐藏则路由将不会出现在侧边栏，但仍然可以访问" placement="top">
                                    <i class="el-icon-question" />
                                </el-tooltip>
                                显示状态
                            </span>
                            <el-radio-group v-model="form.visible">
                                <el-radio :key="0" :label="0">显示</el-radio>
                                <el-radio :key="1" :label="1">隐藏</el-radio>
                            </el-radio-group>
                        </el-form-item>
                    </el-col>
                    <el-col :span="12">
                        <el-form-item v-if="form.menuType != 'F'">
                            <span slot="label">
                                <el-tooltip content="选择停用则路由将不会出现在侧边栏，也不能被访问" placement="top">
                                    <i class="el-icon-question" />
                                </el-tooltip>
                                菜单状态
                            </span>
                            <el-radio-group v-model="form.status">
                                <el-radio :key="0" :label="0">正常</el-radio>
                                <el-radio :key="1" :label="1">停用</el-radio>
                            </el-radio-group>
                        </el-form-item>
                    </el-col>
                </el-row>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button type="primary" @click="submitForm">确 定</el-button>
                <el-button @click="cancel">取 消</el-button>
            </div>
        </el-dialog>


    </div>
</template>

<script>

import { getTreeMenuList, addMenu, getMenuById, updateMenu, deleteMenuById } from '@/api/system/sysMenu'
import Treeselect from '@riophae/vue-treeselect'
import '@riophae/vue-treeselect/dist/vue-treeselect.css'

export default {
    components: { Treeselect },

    data() {
        return {
            // 遮罩层
            loading: true,
            // 显示搜索条件
            showSearch: true,
            // 菜单表格树数据
            menuList: [],
            // 菜单树选项
            menuOptions: [],
            // 弹出层标题
            title: '',
            // 是否显示弹出层
            open: false,
            // 是否展开，默认全部折叠
            isExpandAll: false,
            // 重新渲染表格状态
            refreshTable: true,
            // 查询参数
            queryParams: {
                menuName: undefined,
                visible: undefined
            },
            icons: [],
            // 表单参数
            form: {},
            // 是否展开，默认全部折叠
            isExpandAll: false,

            // 表单校验
            rules: {
                menuName: [
                    { required: true, message: '菜单名称不能为空', trigger: 'blur' }
                ],
                orderNum: [
                    { required: true, message: '菜单顺序不能为空', trigger: 'blur' }
                ],
                path: [
                    { required: true, message: '路由地址不能为空', trigger: 'blur' }
                ]
            }
        }
    },
    created() {
        this.getList()
        this.icons = this.getIcons()
    },
    methods: {

        getIcons() {
            const req = require.context('@/icons/svg', false, /\.svg$/)
            const requireAll = requireContext => requireContext.keys()
            const re = /\.\/(.*)\.svg/

            const arr = requireAll(req).map(i => {
                return i.match(re)[1]
            })
            return arr
        },
        // 选择图标
        selected(name) {
            this.form.icon = name
        },

        /** 查询菜单列表 */
        getList() {
            this.loading = true
            getTreeMenuList(this.queryParams).then(response => {
                // 前端构建树结构
                this.menuList = this.handleTree(response.data, 'id')
                this.loading = false
            })
        },

        /** 转换菜单数据结构 */
        normalizer(node) {
            if (node.children && !node.children.length) {
                delete node.children
            }
            return {
                id: node.id,
                label: node.menuName,
                children: node.children
            }
        },

        /** 查询菜单下拉树结构 */
        getTreeselect() {
            getTreeMenuList().then(response => {
                this.menuOptions = []
                const menu = { id: 0, menuName: '主类目', children: [] }
                menu.children = this.handleTree(response.data, 'id')
                this.menuOptions.push(menu)
            })
        },

        // 重置按钮
        resetData() {
            this.queryParams = {}
            this.getList()
        },

        // 取消按钮
        cancel() {
            this.open = false
            this.reset()
        },

        // 表单重置
        reset() {
            this.form = {
                id: undefined,
                parentId: 0,
                menuName: undefined,
                icon: undefined,
                menuType: 'M',
                orderNum: undefined,
                visible: 0 ,
                status: 0
            }
            this.resetForm('form')
        },
        /** 搜索按钮操作 */
        handleQuery() {
            this.getList()
        },

        /** 展开/折叠操作 */
        toggleExpandAll() {
            this.refreshTable = false;
            this.isExpandAll = !this.isExpandAll;
            this.$nextTick(() => {
                this.refreshTable = true;
            });
        },

        /** 新增按钮操作 */
        handleAdd(row) {
            this.reset()
            this.getTreeselect()
            if (row != null && row.id) {
                this.form.parentId = row.id
            } else {
                this.form.parentId = 0
            }
            this.open = true
            this.title = '添加菜单'
        },

        /** 修改按钮操作 */
        handleUpdate(row) {
            this.reset()
            this.getTreeselect()
            getMenuById(row.id).then(response => {
                this.form = response.data
                this.open = true
                this.title = '修改菜单'
            })
        },

        /** 提交按钮 */
        submitForm: function () {
            this.$refs['form'].validate(valid => {
                if (valid) {
                    if (this.form.id !== undefined) {
                        updateMenu(this.form).then(response => {
                            this.$message.success(response.message || '修改成功');
                            this.open = false
                            this.getList()
                        })
                    } else {
                        addMenu(this.form).then(response => {
                            this.$message.success(response.message || '新增成功');
                            this.open = false
                            this.getList()
                        })
                    }
                }
            })
        },

        // 根据id删除数据
        handleDelete(row) {
            this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(() => { // promise
                // 点击确定，远程调用ajax
                return deleteMenuById(row.id)
            }).then((response) => {
                this.getList()
                this.$message.success(response.message || '删除成功')
            }).catch(() => {
                this.$message.info('取消删除')
            })
        },

    }


}




</script>
